Charles's Host Integration Server Ramblings

The intent is to share some knowledge about Host Integration Server (HIS) that are not well documented, not well known, as well as various tidbits that come up when supporting HIS and all the various components.

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  • Blog Post: What is the DB2 DRDA Resync Service?

    Technorati Tags: Host Integration Server , DB2 , DRDA , DTC , Transaction This is something I knew a bit about, but not the whole story, so I had a talk with one of our developers, Vitaliy Golub, who very kindly explained to me (sometimes giving me a few kicks) how things work. Much of the below I gathered...
  • Blog Post: Replicating NTEXT and IMAGE data to DB2

    One issue that came to us recently was on how to replicate SQL data containing NTEXT and IMAGE columns to DB2. Replicating most other data is straightforward, but NTEXT and IMAGE is a bit of a problem. Currently our data provider does not support LOBs (Large objects) such as CLOB or BLOB (character/binary...
  • Blog Post: Performance Testing the Microsoft OLE DB Provider for DB2 (Part 3)

    In Part 1 of this series I covered testing SQL queries using the Microsoft OLE DB Provider for DB2 using a linked server. In Part 2 I showed how you can test performance with SSIS. However, in many cases, customers may be using C# or VB.NET, writing web services or stand-alone applications to query DB2...
  • Blog Post: Performance Testing the Microsoft OLE DB Provider for DB2 (Part 2)

    Technorati Tags: Data Providers , DB2 , Host Integration Server , Microsoft OLE DB Provider for DB2 , OLEDB , Performance , SSIS , SQL Server In my previous entry, I covered testing SQL queries using the Microsoft OLE DB Provider for DB2 using a linked server, but many customers really need to test performance...
  • Blog Post: Performance Testing the Microsoft OLE DB Provider for DB2 (Part 1)

    Technorati Tags: DB2 , SQL Server , SSIS , Microsoft OLE DB Provider for DB2 , Host Integration Server , Data Providers , Performance , OLEDB There are many factors that can affect pulling data from DB2 into SQL Server (or other applications). These include the network speed, hard drive; machine CPU...
  • Blog Post: DB2 Code Page Fun

    A while back I had a customer who was importing data from AS/400 DB2 tables into SQL Server, using SSIS, and we came upon an interesting error. The below describes how to actually reproduce the issue, and the fix. The fix is currently in all versions of our DB2 Data Provider at this point (assuming you...
  • Blog Post: Using PowerShell to Access DB2

    Yes, PowerShell can be used to access DB2 using The Microsoft Host Integration Server Data Providers. Not a tutorial, but here is the script, ran using HIS 2004’s data provider: $cn = new-object system.data.OleDb.OleDbConnection("Provider=DB2OLEDB;User ID=<userid>;Password=<password>;Initial...
  • Blog Post: Importing CHAR() fields containing null values from DB2 to SQL Server via SSIS

    Earlier this year, I was working with a customer who was doing a mainframe migration from DB2 to SQL Server, and they were using SSIS to import the tables. Several of their columns were CHAR data types, with a null byte as the first byte of the field. The columns, when imported, all contained empty...
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